A medical researcher wishes to try three different techniques to lower blood pre

Question

A medical researcher wishes to try three different techniques to lower blood pressure of patients with high blood pressure. The subjects are randomly selected and assigned to one of three groups. Group 1 is given medication, Group 2 is given an exercise program, and Group 3 is assigned a diet program. At the end of six weeks, each subjects blood pressure is recorded. Find the critical value F0 to test the claim that there is no difference among the means. Use = 0.05. Group 1 Group 2 Group 3 9 8 4 12 2 12 11 3 4 15 5 8 13 4 9 8 0 6

Explanation / Answer

Number of groups k=3

Sample size total n=19

So , degree of freeom =(k-1,n-k)=19-3=16

Critital value F=3.2389 using excel function =FINV(0.05,3,16)

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